If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

I would say the smaller the hammock sock, the better. The heat inside the sock. Comes from only one source - you! Just like snug sleeping bags are warmer than loose bags, even at the same loft, a smaller sock means you have less air to heat up with your body.

I would say the smaller the hammock sock, the better. The heat inside the sock. Comes from only one source - you! Just like snug sleeping bags are warmer than loose bags, even at the same loft, a smaller sock means you have less air to heat up with your body.

I agree. That leads to a question: How small is too small? My instincts tell me that some air space is desirable (i.e. not touching), but I don't know that.

....and Gore-Tex ( Goretex) bivy covers fro USM sleep systems

So great is the taste for these in new and fully waterproof condition, those repaired ones are available for a song in the surplus market. 68" circumference as shoulder and hips, tapering to 38" at the foot.

About 80" long, with all the physical properties of expensive Gore-Tex, a draft flap with snaps, and a fine double YKK zipper to boot.

Get a partner / helper to pin one to a custom taper with you and UQ in the hammock the bivy sack is to be fit to. Get out, and trim to reduce fabric and weight, if desired.

if the sock touches the hammock or quilts, will there be conductive heat loss?

Yes.

But, to me, that is a strange question to be asking about a material that is a relatively poor conductor, so much so that it has been called an insulator.

When the sock nylon touches the UQ, it becomes part of the overall resistance to heat transfer that is the UQ-System. Heat most definitely is passing all the way through that UQ-System via conduction. Therefore, the sock material will be the last layer in the overall conductive heat loss across the UQ-System.

However, I would rephrase the question: if the sock touches the hammock or quilts, will it add to the overall resistance to conductive heat loss?